.btn_start {
    float           : left;
    width           : 130px;
    height          : 102px;
    background-color: #fce4a6;
    margin-right    : 6px;
    margin-bottom   : 6px;
    border-radius   : 5px;
}

.btn_start:hover {
    cursor: pointer;
}

.btn_start h3 {
    margin-top : 20px;
    font-weight: 400;
    text-align : center;
}

.btn_start h4 {
    color      : #bd8753;
    font-weight: 400;
    text-align : center;
}
.lottery {
    position        : relative;
    width           : 500px;
    height          : 410px;
    background-color: #f6ce88;
    padding-top     : 20px;
    padding-left    : 19px;
    border-radius   : 5px;
    overflow        : hidden;
}
.lottery_content {
    position: absolute;
    width           : 440px;
    height          : 350px;
    background-color: #dc7725;
    padding-top     : 18px;
    padding-left    : 19px;
    top: 30px;
    left: 30px;
    border-radius   : 5px;
}


.sider-light {
    position        : absolute;
    background-color: #f6ce88;
}
.sider-light i {
    display        : inline-block;
    width          : 10px;
    height         : 10px;
    border-radius:50%;
    box-shadow     : 0 0 20px rgba(204, 255, 255, .8);
    vertical-align : middle;
    animation      : light 1s alternate infinite;
}

.sider-light :nth-child(2n) {
    animation: light 1s linear 1s alternate infinite;
}
/* 变换动画 */
@keyframes light {
    0% {
        box-shadow :0 0 5px rgba(204, 255, 255, .8);
    }     
    100% {
        box-shadow:0 0 20px rgba(204, 255, 255, .8);
    }
}
/* 左右两侧 */

.left-light,
.right-light {
    width:30px;
    height:350px;
    top:30px;
    left: 0;
    text-align:center;
}
.left-light i,
.right-light i {
    display:block;
    /* margin-top: 90px; */
    background-color: #f9f8e9;
    margin:90px auto;
} 
.left-light :first-child,
.right-light :first-child {
    margin-top:80px;
}
/* .left-light :last-child,
.right-light i:last-child {
    margin-bottom:0;
} */
.left-light :nth-child(2n-1),
.right-light :nth-child(2n-1){
     background-color:#db751d;
} 
.right-light {
    left:auto;
    right:0px;
} 


/* 上下两侧 */
.top-light,
.bottom-light {
    left:0;
    top:0; 
    right: 0;
    height:30px;
    line-height:30px;
    width:500px;
}
.top-light i,
.bottom-light i{
    margin-right:107px;
    background-color: #f9f8e9;
} 
.top-light :first-child,
.bottom-light :first-child {
    margin-left:10px;
} 
.top-light :last-child,
.bottom-light :last-child {
    margin-right :10px;
} 
.top-light :nth-child(2n),
.bottom-light :nth-child(2n) {
    background-color:#db751d;
} 
.top-light {
    /* border-radius:20px 20px 0 0 */
    width: 500px;
}     
.bottom-light {
    top:auto;
    bottom:0px;
    /* border-radius: 0 0 20px 20px; */
}